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Texas Instruments LPV321DBVRG4
- Part No.:
- LPV321DBVRG4
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- SC-74A, SOT-753
- Datasheet:
-
LPV321DBVRG4.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:3,979
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Product details
Overview
LPV321DBVRG4 from Texas Instruments is a single-channel, rail-to-rail output operational amplifier optimized for low-voltage (2.7 V to 5 V), ultra-low-power (9 μA typical supply current at 5 V) applications. It delivers 152 kHz gain-bandwidth product, ±0.2 V to VCC+−0.8 V input common-mode range including ground, and rail-to-rail output swing within 3.5 mV of VCC+ and 90 mV of VCC− at 100-kΩ load-enabling precision signal conditioning in battery-powered sensor interfaces.
For engineers reviewing the LPV321DBVRG4 datasheet, LPV321DBVRG4 pinout, LPV321DBVRG4 application, or LPV321DBVRG4 equivalent, key selection criteria include its guaranteed −40°C to 85°C operation, 1000-pF capacitive-load stability, JESD 22-compliant ESD protection (2000-V HBM), and SOT-23-5 footprint compatibility with space-constrained portable instrumentation and IoT endpoint designs.
Technical Context
The LPV321DBVRG4 employs a CMOS input stage enabling nanoampere-level input bias current (1.7–50 nA) and rail-inclusive common-mode input range. Its internal compensation ensures unity-gain stability while driving up to 1000 pF, eliminating external compensation in most low-frequency filtering and buffering roles.
It operates across 2.7 V to 5 V supply rails with specified performance at both voltages-including 7 mV typical input offset voltage, 70 dB typical CMRR, and 65 dB typical PSRR-making it suitable for DC-coupled, low-noise amplification where supply headroom is constrained and power budget is sub-15 μA per channel.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.7 V to 5 V - supports direct connection to single-cell Li-ion or 3.3 V/5 V logic rails without level-shifting. |
| Supply Current (typ) | 9 μA at 5 V - enables multi-year battery life in always-on sensor front-ends and wearable health monitors. |
| Gain Bandwidth Product | 152 kHz - sufficient for anti-aliasing filters, thermistor amplifiers, and slow-control-loop feedback paths. |
| Input Offset Voltage (max) | 11 mV over −40°C to 125°C - ensures <1% error in 1 V full-scale measurement without trimming. |
| Rail-to-Rail Output Swing | VCC+ − 3.5 mV / VCC− + 90 mV at 100-kΩ - maximizes dynamic range in low-voltage ADC driver stages. |
| Input Common-Mode Range | −0.2 V to VCC+ − 0.8 V - accepts signals down to ground, simplifying single-supply transducer interfacing. |
| Capacitive Load Drive | Stable with 1000 pF - eliminates need for isolation resistors when driving long traces or ADC input capacitance. |
Pinout & Package
SOT-23-5 (DBV) package: 2.9 mm × 1.6 mm × 1.15 mm body, surface-mount, RoHS-compliant, moisture sensitivity level 1 (260°C peak reflow).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OUT) | Amplifier output | Delivers rail-to-rail voltage with sourcing/sinking capability up to 17 mA/72 mA at 5 V. |
| 2 (IN−) | Inverting input | High-impedance CMOS node; connects to feedback network in inverting configurations. |
| 3 (IN+) | Non-inverting input | High-impedance CMOS node; accepts sensor signals referenced to ground or mid-supply. |
| 4 (V−) | Negative supply | Typically connected to GND in single-supply systems; defines lower output limit. |
| 5 (V+) | Positive supply | Accepts 2.7–5 V; powers internal bias circuitry and sets upper output limit. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low quiescent current | 9 μA typical at 5 V - reduces system standby power by >50% versus standard LMV321 variants. |
| Rail-to-rail output stage | Swings within 3.5 mV of V+ and 90 mV of V− - preserves >98% of available voltage range for 12-bit+ ADCs. |
| Ground-sensing input range | Common-mode extends to −0.2 V - enables direct interface with 0 V-referenced thermocouples or bridge sensors. |
| 1000-pF capacitive-load stability | No external compensation required - simplifies layout and reduces BOM count in data-acquisition modules. |
| JESD 22 ESD robustness | 2000-V HBM, 200-V MM, 1000-V CDM - withstands handling and board-level ESD events without protection diodes. |
Applications
| Portable Gas Sensor Signal Conditioning | Wearable Heart Rate Monitor Front-End |
|---|---|
Use Scenario: Amplifying microvolt-level electrochemical sensor output in battery-powered air quality detectors. IC Role / Device Role / Timing Role: Low-noise, DC-coupled transimpedance amplifier with gain-setting feedback resistor. Use Value: 9 μA supply current extends coin-cell life beyond 3 years; rail-to-rail output drives 12-bit SAR ADC directly without level-shifting. | Use Scenario: Conditioning photodiode current from green LED PPG sensor in wrist-worn fitness tracker. IC Role / Device Role / Timing Role: Single-supply transimpedance amplifier with AC-coupled high-pass filter for motion artifact rejection. Use Value: Input common-mode range including ground allows direct connection to photodiode cathode; 152 kHz GBW supports >100 Hz pulse waveform fidelity. |
| Industrial Temperature Transmitter | Smart Home CO Detector Analog Front-End |
Use Scenario: Linearizing and amplifying RTD or thermistor voltage in 4–20 mA loop-powered temperature transmitters. IC Role / Device Role / Timing Role: Precision buffer and reference amplifier in ratiometric measurement circuits with 3.3 V microcontroller ADC. Use Value: 11 mV max input offset ensures <0.5°C error over −40°C to 85°C; 2.7 V min supply enables operation during brownout conditions. | Use Scenario: Amplifying electrochemical CO sensor output in UL-certified residential carbon monoxide alarms. IC Role / Device Role / Timing Role: Low-power, stable gain stage preceding analog window comparator and microcontroller ADC. Use Value: 1000-pF load stability eliminates risk of oscillation driving long PCB traces to remote sensor heads; −40°C to 85°C rating covers attic/wall-mount environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar low-power, rail-to-rail op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LMV321DBVR | Higher supply current (18 μA typ), same pinout and rail-to-rail output, but no 125°C grade option. | Targeted at cost-sensitive industrial controls where 9 μA vs. 18 μA has negligible impact on battery life. | Select LMV321DBVR only if higher bandwidth (1 MHz) is required and ultra-low power is secondary. |
| TLV851DBVR | Lower supply current (420 nA typ), but reduced GBW (2.7 kHz), wider offset range (±3.5 mV), and no 125°C qualification. | Best suited for ultra-long-life, sub-Hz sensor wake-up circuits-not for audio or pulse waveforms. | Choose TLV851DBVR only when microamp-level current is prohibitive and signal bandwidth is <1 kHz. |
Compared with LMV321DBVR, LPV321DBVRG4 halves supply current while retaining identical SOT-23-5 footprint and rail-to-rail output; versus TLV851DBVR, it trades 20× higher current for 56× greater bandwidth and guaranteed 125°C operation-making it optimal for portable medical and environmental sensing where speed and temperature range outweigh absolute minimum power.
Availability
LPV321DBVRG4 is available at Aetrix Electronics and suitable for portable medical devices, battery-powered environmental sensors, and industrial 4–20 mA transmitters requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for LPV321DBVRG4 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Texas Instruments is a global semiconductor leader delivering analog, embedded processing, and connectivity solutions for industrial, automotive, and personal electronics markets.
The LPV321DBVRG4 belongs to TI's LPV3xx low-voltage, low-power op-amp family-designed specifically for space-constrained, battery-operated applications demanding rail-to-rail performance, wide temperature operation, and minimal quiescent current without sacrificing stability or noise performance.
FAQ
What is the maximum operating temperature range for LPV321DBVRG4?
The LPV321DBVRG4 is characterized for operation from −40°C to +85°C. It is not rated for the extended −40°C to +125°C range-those specifications apply only to the LPV321I variant (e.g., LPV321IDBVRG4). For designs requiring 125°C operation, the I-grade version must be selected.
Does LPV321DBVRG4 support rail-to-rail input operation?
No, LPV321DBVRG4 does not support rail-to-rail input. Its input common-mode voltage range is specified as −0.2 V to VCC+ − 0.8 V. While this includes ground (enabling true single-supply use), it does not extend to the positive rail. For rail-to-rail input capability, consider TI's TLV9001 or OPA316 families.
Can LPV321DBVRG4 drive a 1000-pF capacitive load without oscillation?
Yes, LPV321DBVRG4 is explicitly characterized and guaranteed stable with capacitive loads up to 1000 pF, as confirmed in the datasheet's Figure 14 and "Stable With Capacitive Load of 1000 pF" feature bullet. No external series resistor or isolation network is required for such loads.
What is the typical input offset voltage of LPV321DBVRG4 at 25°C and 5 V supply?
The typical input offset voltage of LPV321DBVRG4 is 7 mV at 25°C and 5 V supply, with a maximum of 10 mV over the −40°C to +85°C temperature range. This value is measured under standard test conditions (VIC = 2 V, RL > 1 MΩ) and is critical for precision DC amplification accuracy.
Is LPV321DBVRG4 pin-compatible with other SOT-23-5 op-amps like LMV321DBVR?
Yes, LPV321DBVRG4 is pin-compatible with LMV321DBVR and other industry-standard SOT-23-5 single op-amps (e.g., TLV2371, MCP6001). All share identical pin 1 (OUT), pin 2 (IN−), pin 3 (IN+), pin 4 (V−), pin 5 (V+) assignments-enabling drop-in replacement where quiescent current and temperature range requirements align.
LPV321DBVRG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 1
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 0.1V/µs
- Gain Bandwidth Product:
- 237 kHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 2 nA
- Voltage - Input Offset:
- 1.5 mV
- Current - Supply:
- 9µA
- Current - Output / Channel:
- -
- Voltage - Supply Span (Min):
- 2.7 V
- Voltage - Supply Span (Max):
- 5 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
LPV321DBVRG4 FAQ
1.How can I place an order for LPV321DBVRG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for LPV321DBVRG4 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for LPV321DBVRG4 reliable?
The price and inventory of LPV321DBVRG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LPV321DBVRG4 is usually 5 days.
3.What payment methods are accepted for LPV321DBVRG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LPV321DBVRG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LPV321DBVRG4?
LPV321DBVRG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LPV321DBVRG4 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for LPV321DBVRG4?
For technical support, including LPV321DBVRG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LPV321DBVRG4 requirements.
6.How does Aetrix verify that LPV321DBVRG4 is sourced from the original manufacturer or authorized distributors?
All LPV321DBVRG4 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that LPV321DBVRG4 meets industry standards.
7.What is the process for return or replacement of LPV321DBVRG4?
All LPV321DBVRG4 units undergo pre-shipment inspection (PSI). If there is an issue with LPV321DBVRG4, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The LPV321DBVRG4 part is unused and in its original packaging.
Return procedure for LPV321DBVRG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LPV321DBVRG4 Tags
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LM358DT
STMicroelectronics
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LM358DR
Texas Instruments
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LM2904DR
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LM358ADR
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LM2904DGKR
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MCP6006T-E/OT
Microchip Technology
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MCP6006UT-E/OT
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LM324PWR
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LM2902DR
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LM358P
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